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Finding the Fourth Proportional to 28,703.88, 39,616.11 and 16,767.18

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Solution

The fourth proportional to 28,703.88, 39,616.11 and 16,767.18 is: 23,141.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.88 : 39,616.11 = 16,767.18 : x
  2. Step 2: Convert to fraction form
    28,703.88/39,616.11 = 16,767.18/x
  3. Step 3: Cross multiply
    28,703.88x = 39,616.11 × 16,767.18
  4. Step 4: Simplify right side
    28,703.88x = 664,250,447.27
  5. Step 5: Solve for x
    x = 664,250,447.27/28,703.88
  6. Step 6: Final answer
    x = 23,141.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.